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<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src=/resources/testdriver.js></script>
<script src=/resources/testdriver-vendor.js></script>
<script src='../../mediacapture-streams/permission-helper.js'></script>
<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
<script src="../../service-workers/service-worker/resources/test-helpers.sub.js"></script>
<script src='./../helper.js'></script>
<script>
"use strict";

promise_test(async t => {
  const senderReader = await setupLoopbackWithCodecAndGetReader(t, 'VP8');
  const result = await senderReader.read();
  const metadata = result.value.getMetadata();
  // TODO(https://crbug.com/webrtc/14709): When RTCEncodedVideoFrame has a
  // constructor, create a new frame from scratch instead of cloning it to
  // ensure that none of the metadata was carried over via structuredClone().
  // This would allow us to be confident that setMetadata() is doing all the
  // work.
  //
  // At that point, we can refactor the structuredClone() implementation to be
  // the same as constructor() + set data + setMetadata() to ensure that
  // structuredClone() cannot do things that are not already exposed in
  // JavaScript (no secret steps!).
  const clone = structuredClone(result.value);
  clone.setMetadata(metadata);
  const cloneMetadata = clone.getMetadata();
  // Encoding-related metadata.
  assert_equals(cloneMetadata.frameId, metadata.frameId, 'frameId');
  assert_array_equals(cloneMetadata.dependencies, metadata.dependencies,
                      'dependencies');
  assert_equals(cloneMetadata.width, metadata.width, 'width');
  assert_equals(cloneMetadata.height, metadata.height, 'height');
  assert_equals(cloneMetadata.spatialIndex, metadata.spatialIndex,
                'spatialIndex');
  assert_equals(cloneMetadata.temporalIndex, metadata.temporalIndex,
                'temporalIndex');
  // RTP-related metadata.
  // TODO(https://crbug.com/webrtc/14709): This information also needs to be
  // settable but isn't - the assertions only pass because structuredClone()
  // copies them for us. It would be great if different layers didn't consider
  // different subset of the struct as "the metadata". Can we consolidate into a
  // single webrtc struct for all metadata?
  assert_equals(cloneMetadata.synchronizationSource,
                metadata.synchronizationSource, 'synchronizationSource');
  assert_array_equals(cloneMetadata.contributingSources,
                      metadata.contributingSources, 'contributingSources');
  assert_equals(cloneMetadata.payloadType, metadata.payloadType, 'payloadType');
}, "[VP8] setMetadata() carries over codec-specific properties");

promise_test(async t => {
  const senderReader = await setupLoopbackWithCodecAndGetReader(t, 'VP8');
  const result = await senderReader.read();
  const metadata = result.value.getMetadata();
  const newFrame = new RTCEncodedVideoFrame(result.value);
  const newMetadata = newFrame.getMetadata();

  // Encoding-related metadata.
  assert_equals(newMetadata.frameId, metadata.frameId, 'frameId');
  assert_array_equals(newMetadata.dependencies, metadata.dependencies,
                      'dependencies');
  assert_equals(newMetadata.width, metadata.width, 'width');
  assert_equals(newMetadata.height, metadata.height, 'height');
  assert_equals(newMetadata.spatialIndex, metadata.spatialIndex,
                'spatialIndex');
  assert_equals(newMetadata.temporalIndex, metadata.temporalIndex,
                'temporalIndex');

  // RTP-related metadata.
  assert_equals(newMetadata.synchronizationSource,
                metadata.synchronizationSource, 'synchronizationSource');
  assert_array_equals(newMetadata.contributingSources,
                      metadata.contributingSources, 'contributingSources');
  assert_equals(newMetadata.payloadType, metadata.payloadType, 'payloadType');
  assert_equals(newMetadata.rtpTimestamp, metadata.rtpTimestamp, 'rtpTimestamp');
}, "[VP8] constructor carries over codec-specific properties");

promise_test(async t => {
  const senderReader = await setupLoopbackWithCodecAndGetReader(t, 'VP8');
  const result = await senderReader.read();
  const frame_metadata = result.value.getMetadata();
  frame_metadata.rtpTimestamp = 100;
  const newFrame = new RTCEncodedVideoFrame(result.value, {metadata: frame_metadata});
  const newMetadata = newFrame.getMetadata();

  // Encoding-related metadata.
  assert_equals(newMetadata.frameId, frame_metadata.frameId, 'frameId');
  assert_array_equals(newMetadata.dependencies, frame_metadata.dependencies,
                      'dependencies');
  assert_equals(newMetadata.width, frame_metadata.width, 'width');
  assert_equals(newMetadata.height, frame_metadata.height, 'height');
  assert_equals(newMetadata.spatialIndex, frame_metadata.spatialIndex,
                'spatialIndex');
  assert_equals(newMetadata.temporalIndex, frame_metadata.temporalIndex,
                'temporalIndex');

  // RTP-related metadata.
  assert_equals(newMetadata.synchronizationSource,
  frame_metadata.synchronizationSource, 'synchronizationSource');
  assert_array_equals(newMetadata.contributingSources,
  frame_metadata.contributingSources, 'contributingSources');
  assert_equals(newMetadata.payloadType, frame_metadata.payloadType, 'payloadType');
  assert_equals(newMetadata.rtpTimestamp, frame_metadata.rtpTimestamp, 'rtpTimestamp');
  assert_not_equals(newMetadata.rtpTimestamp, result.value.getMetadata().rtpTimestamp, 'rtpTimestamp');
}, "[VP8] constructor with metadata carries over codec-specific properties");

promise_test(async t => {
  const senderReader = await setupLoopbackWithCodecAndGetReader(t, 'VP8');
  const result = await senderReader.read();
  const metadata = result.value.getMetadata();
  // Change the metadata by setting a new RTPTimestamp.
  metadata.rtpTimestamp = 100;
  const newFrame = new RTCEncodedVideoFrame(result.value);
  const newMetadata = newFrame.getMetadata();

  // Encoding-related metadata.
  assert_equals(newMetadata.frameId, metadata.frameId, 'frameId');
  assert_array_equals(newMetadata.dependencies, metadata.dependencies,
                      'dependencies');
  assert_equals(newMetadata.width, metadata.width, 'width');
  assert_equals(newMetadata.height, metadata.height, 'height');
  assert_equals(newMetadata.spatialIndex, metadata.spatialIndex,
                'spatialIndex');
  assert_equals(newMetadata.temporalIndex, metadata.temporalIndex,
                'temporalIndex');

  // RTP-related metadata.
  assert_equals(newMetadata.synchronizationSource,
                metadata.synchronizationSource, 'synchronizationSource');
  assert_array_equals(newMetadata.contributingSources,
                      metadata.contributingSources, 'contributingSources');
  assert_equals(newMetadata.payloadType, metadata.payloadType, 'payloadType');

  // RTPTimestamp don't match because the constructor did not use the metadata for construction.
  assert_not_equals(newMetadata.rtpTimestamp, metadata.rtpTimestamp, 'rtpTimestamp');
  assert_equals(newMetadata.rtpTimestamp, result.value.getMetadata().rtpTimestamp, 'rtpTimestamp');
}, "[VP8] constructor without metadata does not carry over modified metadata ");
</script>
